{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:53.842600", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2013-Nov-22_to_2013-Nov-25_246.5_30.0"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2013110001006}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "November 22 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 25 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 87543.79913355467}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Mexico", "United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Central-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North America"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": ["Gulf of California"]}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 30.0}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 246.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "246.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 243.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 247.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 33.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.53, 29.47], [-114.75, 30.0], [-114.53, 30.53], [-114.0, 30.75], [-113.75, 30.65], [-113.5, 30.75], [-112.97, 30.53], [-112.75, 30.0], [-112.97, 29.47], [-113.5, 29.25], [-113.75, 29.35], [-114.0, 29.25], [-114.53, 29.47]]]]}, "2013-11-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.75, 32.5], [-116.53, 33.03], [-116.0, 33.25], [-115.75, 33.15], [-115.68, 33.18], [-115.53, 33.53], [-115.0, 33.75], [-114.47, 33.53], [-114.32, 33.18], [-113.97, 33.03], [-113.75, 32.5], [-113.85, 32.25], [-113.82, 32.18], [-113.47, 32.03], [-113.32, 31.68], [-112.97, 31.53], [-112.82, 31.18], [-112.47, 31.03], [-112.25, 30.5], [-112.35, 30.25], [-112.25, 30.0], [-112.35, 29.75], [-112.32, 29.68], [-111.97, 29.53], [-111.75, 29.0], [-111.97, 28.47], [-112.32, 28.32], [-112.47, 27.97], [-113.0, 27.75], [-113.53, 27.97], [-113.68, 28.32], [-114.03, 28.47], [-114.18, 28.82], [-114.53, 28.97], [-114.68, 29.32], [-114.75, 29.35], [-115.0, 29.25], [-115.53, 29.47], [-115.68, 29.82], [-116.03, 29.97], [-116.25, 30.5], [-116.15, 30.75], [-116.25, 31.0], [-116.15, 31.25], [-116.25, 31.5], [-116.15, 31.75], [-116.18, 31.82], [-116.53, 31.97], [-116.75, 32.5]]]]}, "2013-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.75, 32.5], [-116.53, 33.03], [-116.0, 33.25], [-115.75, 33.15], [-115.68, 33.18], [-115.53, 33.53], [-115.0, 33.75], [-114.47, 33.53], [-114.32, 33.18], [-113.97, 33.03], [-113.75, 32.5], [-113.85, 32.25], [-113.82, 32.18], [-113.47, 32.03], [-113.32, 31.68], [-112.97, 31.53], [-112.82, 31.18], [-112.47, 31.03], [-112.25, 30.5], [-112.35, 30.25], [-112.25, 30.0], [-112.35, 29.75], [-112.32, 29.68], [-111.97, 29.53], [-111.75, 29.0], [-111.97, 28.47], [-112.32, 28.32], [-112.47, 27.97], [-113.0, 27.75], [-113.53, 27.97], [-113.68, 28.32], [-114.03, 28.47], [-114.18, 28.82], [-114.53, 28.97], [-114.68, 29.32], [-114.75, 29.35], [-115.0, 29.25], [-115.53, 29.47], [-115.68, 29.82], [-116.03, 29.97], [-116.25, 30.5], [-116.15, 30.75], [-116.25, 31.0], [-116.15, 31.25], [-116.25, 31.5], [-116.15, 31.75], [-116.18, 31.82], [-116.53, 31.97], [-116.75, 32.5]]]]}, "2013-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.75, 32.5], [-116.53, 33.03], [-116.0, 33.25], [-115.75, 33.15], [-115.68, 33.18], [-115.53, 33.53], [-115.0, 33.75], [-114.47, 33.53], [-114.32, 33.18], [-113.97, 33.03], [-113.75, 32.5], [-113.85, 32.25], [-113.82, 32.18], [-113.47, 32.03], [-113.32, 31.68], [-112.97, 31.53], [-112.82, 31.18], [-112.47, 31.03], [-112.25, 30.5], [-112.35, 30.25], [-112.25, 30.0], [-112.35, 29.75], [-112.32, 29.68], [-111.97, 29.53], [-111.75, 29.0], [-111.97, 28.47], [-112.32, 28.32], [-112.47, 27.97], [-113.0, 27.75], [-113.53, 27.97], [-113.68, 28.32], [-114.03, 28.47], [-114.18, 28.82], [-114.53, 28.97], [-114.68, 29.32], [-114.75, 29.35], [-115.0, 29.25], [-115.53, 29.47], [-115.68, 29.82], [-116.03, 29.97], [-116.25, 30.5], [-116.15, 30.75], [-116.25, 31.0], [-116.15, 31.25], [-116.25, 31.5], [-116.15, 31.75], [-116.18, 31.82], [-116.53, 31.97], [-116.75, 32.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.9177461565022895}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.00865616536367}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.83092966905963, 14.014573404491955, 13.919035921839566, 14.399568146917034]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.79384216197144, 4.425604030945635, 3.763274942856924, 5.684122266102747]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.609617973642969, -4.451673403372994, -4.277551143425175, -3.361936579523169]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.682537263980066, -6.665758967186093, -6.9177461565022895, -4.802499943896066]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4579645556093888, -1.9843910802009403, -1.8943221560061756, -1.4760232832028846]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4689612341787126, -2.726004842555913, -2.381462953230916, -1.8635466304621668]}}